Patent US3790435A successfully refreshed from Google Patents.
Patent US3825591A successfully refreshed from Google Patents.
Patent US3152251A successfully refreshed from Google Patents.
US3152251A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for automatically determining ultraviolet absorbance in a system
Assignee: Pharmacia and Upjohn Co
•
Filing: 1961-12-27
•
Granted: 1964-10-06
•
Expires: 1981-12-27
Abstract
No abstract record available.
Inventors
- 👤 Louis C Schroeter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 13:49
CPC Classifications
G; G01; G01N; G01N21/00; G01N21/17; G01N21/25; G01N21/31; G01N21/33; G01N21/27; G01N21/272
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
126 words
AN APPARATUS FOR THE AUTOMATED DETERMINATION OF ULTRAVIOLET ABSORBANCE OF LIQUID STREAMS COMPRISING: IN COMBINATION, (1) A REACTION CHAMBER; (2) A RESERVOIR CONTAINING DILUENT FOR DILUTING THE SOLUTION STREAM FROM SAID REACTION CHAMBER; (3) A SPECTROPHOTOMER FOR MEASURING ULTRAVIOLET ABSORBANCE OF SAID SOLUTION; (4) A MIXING CHAMBER FOR MIXING SAID SOLUTION AND SAID DILUENT; (5) MEANS INCLUDING A PUMP FOR MOVING SAID SOLUTION FROM SAID REACTION CHAMBER THROUGH SAID MIXING CHAMBER TO SAID SPECTROPHOTOMETER AT SUBSTANTIALLY CONSTANT RATE, AND (6) MEANS INCLUDING A PUMP FOR MOVING DILUENT FROM SAID RESERVOIR THROUGH SAID MIXING CHAMBER IN CONTACT WITH SAID SOLUTION TO SAID SPECTROPHOTOMETER AT SUBSTANTIALLY CONSTANT RATE, WHEREBY THE ULTRAVIOLET ABSORBANCE OF THE THUS DILUTED SOLUTION IS MEASURED AND TRANSMITTED BY THE SPECTROPHOTOMETER AS THE REACTION PROCEEDS.
Claim 2
Independent Claim
126 words
AN APPARATUS FOR THE AUTOMATED DETERMINATION OF ULTRAVIOLET ABSORBANCE OF LIQUID STREAMS COMPRISING: IN COMBINATION, (1) A REACTION CHAMBER; (2) A RESERVOIR CONTAINING DILUENT FOR DILUTING THE SOLUTION STREAM FROM SAID REACTION CHAMBER; (3) A SPECTROPHOTOMER FOR MEASURING ULTRAVIOLET ABSORBANCE OF SAID SOLUTION; (4) A MIXING CHAMBER FOR MIXING SAID SOLUTION AND SAID DILUENT; (5) MEANS INCLUDING A PUMP FOR MOVING SAID SOLUTION FROM SAID REACTION CHAMBER THROUGH SAID MIXING CHAMBER TO SAID SPECTROPHOTOMETER AT SUBSTANTIALLY CONSTANT RATE, AND (6) MEANS INCLUDING A PUMP FOR MOVING DILUENT FROM SAID RESERVOIR THROUGH SAID MIXING CHAMBER IN CONTACT WITH SAID SOLUTION TO SAID SPECTROPHOTOMETER AT SUBSTANTIALLY CONSTANT RATE, WHEREBY THE ULTRAVIOLET ABSORBANCE OF THE THUS DILUTED SOLUTION IS MEASURED AND TRANSMITTED BY THE SPECTROPHOTOMETER AS THE REACTION PROCEEDS.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-10-06 | 1968-04-06 | 1968-10-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-10-06 | 1972-04-06 | 1972-10-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-10-06 | 1976-04-06 | 1976-10-06 | $7700.00 | Window Closed / Lapsed |